Count Words

Given a sentence, count how many words it contains.

Input

A single line of 1 to 10^5 ASCII characters containing a sentence with at least one word. A word is any sequence of characters without spaces (letters, digits or punctuation). Words are separated by one or more spaces, and the line may start or end with spaces.

Output

Print the number of words in the sentence.

Examples

Input:  hello world
Output: 2

Input:  Python is really fun
Output: 4

Input:  hello
Output: 1

A single word is still one word.